Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Thermal Expansion01:22

Thermal Expansion

5.7K
The expansion of alcohol in a thermometer is one of many commonly encountered examples of thermal expansion, which is the change in size or volume of a given system as its temperature changes. The most visible example is the expansion of hot air. When air is heated, it expands and becomes less dense than the surrounding air, which then exerts an upward force on the hot air to, for example, make steam and smoke rise, and hot air balloons float. The same behavior happens in all liquids and gases,...
5.7K
Thermal expansion and Thermal stress: Problem Solving01:27

Thermal expansion and Thermal stress: Problem Solving

2.2K
San Francisco's Golden Gate Bridge is exposed to temperatures ranging from -15 °C to 40 °C. At its coldest, the main span of the bridge is 1275 m long. Assuming that the bridge is made entirely of steel, what is the change in its length between these temperatures?
To solve the problem, first, identify the known and unknown quantities. The initial length (L) of the bridge is 1275 m, the coefficient of linear expansion (α) for steel is 12 x 10-6/°C, and the change in temperature (ΔT) is 55...
2.2K
Molecular and Ionic Solids02:54

Molecular and Ionic Solids

20.2K
Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
20.2K
Negative Regulator Molecules01:23

Negative Regulator Molecules

38.6K
Positive regulators allow a cell to advance through cell cycle checkpoints. Negative regulators have an equally important role as they terminate a cell’s progression through the cell cycle—or pause it—until the cell meets specific criteria.
38.6K
Heat and Free Expansion01:24

Heat and Free Expansion

2.9K
The work done by a thermodynamic system depends not only on the initial and final states but also on the intermediate states—that is, on the path. Like work, when heat is added to a thermodynamic system, it undergoes a change of state, and the state attained depends on the path from the initial state to the final state. Consider an ideal gas cylinder fitted with a piston. When the cylinder is heated at a constant temperature, the gas molecules absorb energy and expand slowly in a...
2.9K
Positive, Negative, and Zero Work00:58

Positive, Negative, and Zero Work

22.3K
Work is done on an object when energy is transferred to the object. In other words, work is done when a force acts on a body that undergoes a displacement from one position to another. By definition, the work done by a force is the integral of the force with respect to the displacement along its path. Forces can vary as a function of position, and displacements can occur along various paths between two points. The magnitude of a force multiplied by the cosine of the angle that the force makes...
22.3K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Anion Order Triggered Janus Ferroelectricity in Chalcogenides.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

Manipulating 2D Nanomaterials: Shaping the Future of Intelligent Wearable Health Monitoring Devices.

ACS nano·2026
Same author

Atomic faulting drives exceptional toughness in low thermal expansion chromium alloys.

Nature communications·2026
Same author

Atomic surface structure for unraveling the trade-off between the propane dehydrogenation activity and anti-deactivation of PtSn catalysts.

Chemical science·2025
Same author

Zr element promotes gallium oxide-based catalyst activity for direct dehydrogenation of propane.

Chemical communications (Cambridge, England)·2025
Same author

Polarization Rearrangement Induced High-Efficiency Piezocatalytic Overall Pure Water Splitting in Ultrathin (001)-Confined PbTiO<sub>3</sub>.

Journal of the American Chemical Society·2025

Related Experiment Video

Updated: Feb 11, 2026

Characterization of Thermal Transport in One-dimensional Solid Materials
05:20

Characterization of Thermal Transport in One-dimensional Solid Materials

Published on: January 26, 2014

19.5K

Negative thermal expansion in molecular materials.

Zhanning Liu1, Qilong Gao, Jun Chen

  • 1Department of Physical Chemistry, University of Science and Technology Beijing, Beijing, 100083, China. xing@ustb.edu.cn.

Chemical Communications (Cambridge, England)
|May 1, 2018
PubMed
Summary

Negative thermal expansion (NTE) in molecular materials offers unique control over thermal expansion. This research explores NTE mechanisms in molecular systems, highlighting their potential for advanced material applications.

More Related Videos

Author Spotlight: Universal Molecular Retention with 11-Fold Expansion Microscopy
10:31

Author Spotlight: Universal Molecular Retention with 11-Fold Expansion Microscopy

Published on: October 6, 2023

8.8K
Development of a Benchtop Model for Evaluating the Compatibility of Wound Dressing Materials with Negative Pressure Wound Therapy Systems
06:45

Development of a Benchtop Model for Evaluating the Compatibility of Wound Dressing Materials with Negative Pressure Wound Therapy Systems

Published on: May 2, 2025

895

Related Experiment Videos

Last Updated: Feb 11, 2026

Characterization of Thermal Transport in One-dimensional Solid Materials
05:20

Characterization of Thermal Transport in One-dimensional Solid Materials

Published on: January 26, 2014

19.5K
Author Spotlight: Universal Molecular Retention with 11-Fold Expansion Microscopy
10:31

Author Spotlight: Universal Molecular Retention with 11-Fold Expansion Microscopy

Published on: October 6, 2023

8.8K
Development of a Benchtop Model for Evaluating the Compatibility of Wound Dressing Materials with Negative Pressure Wound Therapy Systems
06:45

Development of a Benchtop Model for Evaluating the Compatibility of Wound Dressing Materials with Negative Pressure Wound Therapy Systems

Published on: May 2, 2025

895

Area of Science:

  • Materials Science
  • Chemistry

Background:

  • Negative thermal expansion (NTE) is a phenomenon where materials contract upon heating, attracting significant interest for applications.
  • Molecular materials are crucial in catalysis and sensing, often experiencing temperature fluctuations.
  • NTE provides a method for precise control over thermal expansion coefficients.

Purpose of the Study:

  • To provide an overview of recent advancements in utilizing NTE within molecular materials.
  • To summarize the various mechanisms responsible for NTE in these systems.

Main Methods:

  • Literature review of recent developments in NTE molecular materials.
  • Analysis of factors contributing to NTE, including vibrations, flexibility, and interactions.

Main Results:

  • Molecular materials offer versatile platforms for thermal expansion modification due to their tunable structures.
  • NTE in molecular materials is influenced by transverse vibration, geometric flexibility, host-guest interactions, spin crossover, molecular packing, and conformational changes.

Conclusions:

  • Molecular materials are promising candidates for engineered thermal expansion properties.
  • Understanding NTE mechanisms is key to designing advanced materials for demanding thermal environments.